Installation Manual
Quidway S3000-EI Series Ethernet Switches Appendix A Lightning Protection of the Switch
A-2
Caution:
1) Make sure that the arrester is well grounded before using the lightning arrester for power.
2) After inserting AC power cord plug of switch into the socket of lightning arrester, if the green LED is on
and the red LED does not alarm, it means that the lightning arrester of power is running and the function
of lightning protection has taken effect.
3) Pay adequate attention if the red LED is on. You should correctly locate the problem, whether it is
caused because the ground wire of the arrester is not well grounded or because the live and zero wires
are connected in reverse direction. You may check that in the following way. When the red LED is on,
use a multimeter to examine polarity at the power socket of the arrester. If it is same to that of the power
socket in the equipment room, it means that arrester is not well grounded. If it is adverse to that of the
power socket in the equipment room, it means that the power socket of the arrester is set to the reverse
polarity. In this case, you should open the power socket of arrester to correct polarity. After that, if the
red LED still alarms, it means that the arrester is not well grounded yet.
A.2 Installation of Lightning Arrester for Network Port
Note:
Lightning arrester for network port is specially designed for the Ethernet port of 10/100M electrical
interface (RJ-45 connector is adopted in this case).
Caution:
Lightning arrester for network port will not be provided along with the switch, and you should purchase it
by yourself if needed.
If an outdoor network cable should be led to the switch, please serially connect the
lightning arrester for network port before you plug this cable into the interface on the
switch, in case of the possibility that the switch may be damaged due to lightning
strike.
I. Required tools
z Phillips screwdriver or Flat-blade screwdriver
z Multimeter
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